It works flawlessly. My "Check Engine Soon" light has not been back and my car passed SMOG. This is a direct OEM replacement for my R53 Mini Cooper S. It comes with anti-seize already brushed on the threads and protected with a plastic cover. Other brands of O2 sensors may be listed "Compatible" with your vehicle, but apparently O2 sensors are hyper sensitive the the make and model of you vehicle and the OEM replacement is best. In the case of my Mini, brands like Bosch have compatible sensors, but in many cases they do not remedy or clear check engine lights.
If you own a Mini Cooper, buy this sensor. Don't buy the cheap versions out there...your SES light may go off initially but it will come back on...trust me, I tried the cheaper ones...